Post-Neutron Mass Yield Distribution in the Epi-Cadmium Neutron-Induced Fission of ²⁴³Am

Abstract

The cumulative yields of fission products within the mass range of 83 to 119 and 123 to 158 have been measured in the epi-cadmium neutron-induced fission of ²⁴³Am by using an off-line gamma-ray spectrometric technique. Mass chain yields were obtained from the cumulative yields of the fission products by applying the charge distribution correction. From the mass yield data, the full-width at tenth-maximum of the light and heavy mass wing, the peak-to-valley (P/V) ratio, the average light mass <A_L> and heavy mass <A_H>, and the average number of neutrons <ν> were obtained. The mass yield data in the ²⁴³Am(n,f) reaction were compared with similar data in the ²⁴³Am(n_th,f) and ²⁴³Am(n_{16.5 MeV},f) reactions to examine the role of excitation energy on the nuclear structure effect and P/V ratio.

Keywords:

• ²⁴³Am(n,f) reaction
• epi-cadmium neutron-induced fission
• fission product yields
• off-line gamma-ray spectrometry
• mass chain yield distribution
• peak-to-valley ratio
• ²⁴³Am

Acknowledgments

We are thankful to R. H. Iyer, of the Radiochemistry Division, BARC, for his keen interest and support during this work. The authors are also thankful to the staff of the reactor APSARA and CIRUS at BARC for their help for providing the irradiation facility and successfully carrying out the irradiations during the experiment.

Disclosure Statement

No potential conflict of interest was reported by the author(s).